2 * procfs namespace bits
4 #ifndef _LINUX_PROC_NS_H
5 #define _LINUX_PROC_NS_H
7 #include <linux/ns_common.h>
13 struct proc_ns_operations
{
16 struct ns_common
*(*get
)(struct task_struct
*task
);
17 void (*put
)(struct ns_common
*ns
);
18 int (*install
)(struct nsproxy
*nsproxy
, struct ns_common
*ns
);
21 extern const struct proc_ns_operations netns_operations
;
22 extern const struct proc_ns_operations utsns_operations
;
23 extern const struct proc_ns_operations ipcns_operations
;
24 extern const struct proc_ns_operations pidns_operations
;
25 extern const struct proc_ns_operations userns_operations
;
26 extern const struct proc_ns_operations mntns_operations
;
29 * We always define these enumerators
33 PROC_IPC_INIT_INO
= 0xEFFFFFFFU
,
34 PROC_UTS_INIT_INO
= 0xEFFFFFFEU
,
35 PROC_USER_INIT_INO
= 0xEFFFFFFDU
,
36 PROC_PID_INIT_INO
= 0xEFFFFFFCU
,
41 extern int pid_ns_prepare_proc(struct pid_namespace
*ns
);
42 extern void pid_ns_release_proc(struct pid_namespace
*ns
);
43 extern int proc_alloc_inum(unsigned int *pino
);
44 extern void proc_free_inum(unsigned int inum
);
46 #else /* CONFIG_PROC_FS */
48 static inline int pid_ns_prepare_proc(struct pid_namespace
*ns
) { return 0; }
49 static inline void pid_ns_release_proc(struct pid_namespace
*ns
) {}
51 static inline int proc_alloc_inum(unsigned int *inum
)
56 static inline void proc_free_inum(unsigned int inum
) {}
58 #endif /* CONFIG_PROC_FS */
60 static inline int ns_alloc_inum(struct ns_common
*ns
)
62 atomic_long_set(&ns
->stashed
, 0);
63 return proc_alloc_inum(&ns
->inum
);
66 #define ns_free_inum(ns) proc_free_inum((ns)->inum)
68 extern struct file
*proc_ns_fget(int fd
);
69 #define get_proc_ns(inode) ((struct ns_common *)(inode)->i_private)
70 extern void *ns_get_path(struct path
*path
, struct task_struct
*task
,
71 const struct proc_ns_operations
*ns_ops
);
73 extern int ns_get_name(char *buf
, size_t size
, struct task_struct
*task
,
74 const struct proc_ns_operations
*ns_ops
);
75 extern void nsfs_init(void);
77 #endif /* _LINUX_PROC_NS_H */